When not working, he is a keen cyclist, gardener and chef. He is a former equestrian who now satisfies his love for speed and power with a 1997 SAAB 9000 Aero and a 1988 Suzuki GSX-R1100. He is married to Âu Dương Lệ Khanh, and says that asking her to marry him was the best decision he ever made (the second-best was taking early retirement).

[1] Strictly speaking, he is now using Jonathan Kew's XETEX, itself based in part on Hàn Thế Thành's PdfTEX, although both Thành and Jonathan would be the first to acknowledge their debt to Don.

[2] He fervently believes that HTML 5 is the spawn of the devil, and should have been painlessly put down shortly after birth.